Answer:
Step-by-step explanation:
Plug in the value of y & z in the expression

Answer:
i's 20 because it seems that it is the most successful
Answer:
1/2
Step-by-step explanation:
thats the answer
dived 13 by 17
13/17 = 0.7647
= 76.47%
if you need to round the number it would be 76%, which is a 76 grade